package com.zc.study.thread.多线程第三章节.thread3_1_1;

import java.util.ArrayList;
import java.util.List;

public class ThreadUtils {
    private List<Integer> list = new ArrayList();
    public void addList(int i){
        list.add(i);
    }
    public int getIndex(){
        return list.size();
    }

}
